| [ Total Views: 1328 | Total Replies: 8 | Thread Id: 110918 ] |
|
|
 Camo
A.k.a.: Kev
Custom Title Time!
Posts: 1936
Threads: 209
Registered: October 29th, 2007
Member Is Offline
Location: Sydney - Liverpool area
Theme: UltimaBB Pro Blue
|
| posted on May 2nd, 2016 at 09:08 AM |
|
|
Should aircooled VW run richer air/fuel ratio
Hi all,
Firstly, this is about high performance VW engines.
I recall someone saying or reading once that air cooled VW engines should be run slightly richer than other engines. From memory I think it was to
aid slightly for heat issues in our engines, but I don't know.
So is there any truth to this and if you know either way for sure, please let me know.
Cheers, Kev
|
|
|
HappyDaze
A.k.a.: Greg Mackie
Son of Jim - Creator of Good
Superannuated
Posts: 2887
Threads: 141
Registered: June 13th, 2009
Member Is Offline
Location: Southern Highlands NSW
Theme: UltimaBB Pro Blue ( Default )
Mood: Happy enough
|
| posted on May 2nd, 2016 at 12:23 PM |
|
|
Kev, the main thing is the engine must not run too hot. If the temperature can be kept at a safe level, without dropping a lot of power, then err on
the safe side and run a bit rich.
Do you have an air/fuel gauge fitted ?
I'd rather wear a Beetle out by racing it than by polishing it!
|
|
|
 vw54
Super Administrator
Always Waiting 4 Friday
Posts: 16723
Threads: 378
Registered: August 26th, 2002
Member Is Offline
Location: Sunny Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Oval resto ongoing
|
| posted on May 2nd, 2016 at 01:59 PM |
|
|
slightly richer is good as per above to make it run cooler
|
|
|
Camo
A.k.a.: Kev
Custom Title Time!
Posts: 1936
Threads: 209
Registered: October 29th, 2007
Member Is Offline
Location: Sydney - Liverpool area
Theme: UltimaBB Pro Blue
|
| posted on May 2nd, 2016 at 05:31 PM |
|
|
Thanks guys. I may be getting it dyno tuned this week with a guy that knows and uses my brand ECU (Megasuirt) but not sure if he knows about air
cooled vw's 
Thought if I knew for sure I could say tune it and then add 2-3% across all tables, just as an example 
Greg - Laptop displays the ratio, but not sure if it is accurate until dyno and he sticks thing up exhaust pipe to compare.
Dave - Water injection will also cool it  And this may be a future mod
Cheers, Kev
|
|
|
HappyDaze
A.k.a.: Greg Mackie
Son of Jim - Creator of Good
Superannuated
Posts: 2887
Threads: 141
Registered: June 13th, 2009
Member Is Offline
Location: Southern Highlands NSW
Theme: UltimaBB Pro Blue ( Default )
Mood: Happy enough
|
| posted on May 2nd, 2016 at 05:51 PM |
|
|
Dyno AFR reading should be OK, but keep an eye on temps. Do you have a cylinder head temp. gauge ?
At 6000 RPM in 4th at Wakefield Park, No.8 Beetle showed 12.4 : 1 AFR on the gauge, and 350F on the CHT gauge, for what it's worth.
You need a big spark to run rich...hope yours is big enough ! I'm talking about spark, you fools. 
I'd rather wear a Beetle out by racing it than by polishing it!
|
|
|
vw54
Super Administrator
Always Waiting 4 Friday
Posts: 16723
Threads: 378
Registered: August 26th, 2002
Member Is Offline
Location: Sunny Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Oval resto ongoing
|
| posted on May 2nd, 2016 at 08:14 PM |
|
|
Water Injection tooooooo FKIN complicated
Use the KISS method for all things VW
Get a sensor up its bum and check the ratio pretty simple and cheaper than a dyno tune by a guy that DOES NOT no VWs
U will be 12 out of pocket
|
|
|
hellbugged
A.k.a.: Daimo Pell
23 Windows of Awesome
48's and straight cuts
Posts: 5080
Threads: 116
Registered: April 17th, 2003
Member Is Offline
Location: Nambucca Valley NSW
Theme: UltimaBB Psyche Blue
Mood: Couldn't care less
|
| posted on May 3rd, 2016 at 06:24 AM |
|
|
Kev
Please talk to lee Harris first
His turbo injected beetle has been running sweet for years.
http://forums.aussieveedubbers.com/viewprofile.php?memberid=592
|
|
|
Camo
A.k.a.: Kev
Custom Title Time!
Posts: 1936
Threads: 209
Registered: October 29th, 2007
Member Is Offline
Location: Sydney - Liverpool area
Theme: UltimaBB Pro Blue
|
| posted on May 3rd, 2016 at 07:27 AM |
|
|
| Quote: | Originally
posted by hellbugged
Kev
Please talk to lee Harris first
His turbo injected beetle has been running sweet for years.
|
Good thinking 99, I have his number so will give him a call 
Thanks, Kev
|
|
|
fish26
A.k.a.: benito
Fahrvergnugen
Posts: 903
Threads: 38
Registered: July 13th, 2007
Member Is Offline
Location: sydney
Theme: UltimaBB Pro Grey
Mood: Ken awesome
|
| posted on May 3rd, 2016 at 09:09 PM |
|
|
Will this be the first dyno tune since the engine build?
bitten by the bug..........several times
|
|
|
